I know it's been raised before on here. Does anyone have a solution for this yet(other than the filling-reservoir-with-pistons-not-completely- retracted option)?
I have 2 sets of XTs. Both are bled properly (bottom up). There is no air in them at all.
One set, the levers move, at most, half an inch before being solidly on. Other (newer) set, the levers move, over an inch (before being solidly on). The latter ones are on my other half's bike and small hands with brakes that have an inch of free stroke aren't a good combination.
Problem seems to be that the pistons retract back completely into the calipers as the brakes are released rather than just backing off the rotor a little bit....as (all) disc brakes (in theory) are supposed to. And strangely - this seems to be at its worst when pads have minimal wear.
The Shimano free stroke adjuster as other people have pointed out here doesn't adjust the free stroke, merely alters the cam and hence the rate at which brakes come on - so that doesn't seem to be the answer.
Any ideas gratefully appreciated